Luke Griffiths and Jade Gailberger, The Advertiser July 23, 2016 12:00am http://www.adelaidenow.com.au/news/south-australia/explaining-why-south-australia-has-very-high-electricity-costs/news-story/7931486351ab40b4e6d3541d3863da4f WHEN The Advertiser last week revealed some of the state’s biggest employers were close to temporarily closing due